36. It is easy to wash clothes in hot water because its
(a) Surface tension is more
(b) Surface tension is less
(c) Consumes less soap
(d) None of these
Ans. (b) Surface tension of water decrease with rise in temperature.
(10)
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(a) – 5 J (b) – 10 J (c) – 15 J (d) – 20 J Answer-a (126)